28836500 has 144 divisors (see below), whose sum is σ = 80668224. Its totient is φ = 8904000.

The previous prime is 28836499. The next prime is 28836517. The reversal of 28836500 is 563882.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 269447 + ... + 269553.

It is an arithmetic number, because the mean of its divisors is an integer number (560196).

Almost surely, 2^28836500 is an apocalyptic number.

28836500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28836500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40334112).

28836500 is an abundant number, since it is smaller than the sum of its proper divisors (51831724).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28836500 is a wasteful number, since it uses less digits than its factorization.

28836500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151 (or 132 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 28836500 is about 5369.9627559230. The cubic root of 28836500 is about 306.6532103946.

The spelling of 28836500 in words is "twenty-eight million, eight hundred thirty-six thousand, five hundred".